HttpClientErrorException: 404 null

Question

I try to call the address in the controller using RestTemplate and as a result I want to get OK or NOT FOUND status I do so in this controller

@GetMapping(value = "/thanks")
public ModelAndView confirmAccount(
        @RequestParam String token,
        UriComponentsBuilder uriComponentsBuilder
) {
    RestTemplate restTemplate = new RestTemplate();
    HttpEntity<Object> entity = new HttpEntity<>(new HttpHeaders());

    UriComponents uriComponents
            = uriComponentsBuilder.path("/register/token/{token}").buildAndExpand(token);

    ResponseEntity<Boolean> response = restTemplate
            .exchange(uriComponents.toUri(),
                      HttpMethod.PUT,
                      entity,
                      Boolean.class);

    return response.getStatusCode().toString().equals("200")
            ?  new ModelAndView("redirect:/signIn") : new ModelAndView("tokenNotFound");
}

I call this address of the controller.

@RequestMapping(value = "/register/token/{token}", method = RequestMethod.PUT)
public
HttpEntity<Boolean> confirmAccount(
        @PathVariable String token
) {
    Optional<User> userOptional = userService.findByActivationToken(token);

    if(userOptional.isPresent()) {
        User user = userOptional.get();

        user.setActivationToken(null);
        user.setEnabled(true);

        userService.saveUser(user);
    } else {
        return ResponseEntity.notFound().build();
    }

    return ResponseEntity.ok(true);
}

As a result, she throws me out in the console

org.springframework.web.client.HttpClientErrorException: 404 null
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:63) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:700) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:653) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:628) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:549) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at com.service.app.controller.RegisterController.confirmAccount(RegisterController.java:40) ~[classes/:na]

Why does RestTemplate not want to return the status 404 as a result? enter code here

Solution

I struggled a lot with this exception Even URL is absolutely correct and relative URLs works for POST request. 404 means URL specify in RestTemplate or HttpRequest for GET type method is incorrect due to Query Param or Request Params or Path Params. Reason Query/Path param's value contain special character that converted or interpreted differently. Let Say queryParams is [email protected] which converted into email=test20%xyz41%.com

Solution: Decoding while passing query/path params.

Add Following code at server side [controller code]

ServerSide[Controller]:

import java.net.URLDecoder;
 import java.net.URLEncoder;

String encodedEmail = URLDecoder.decode(email, "UTF-8");

It perfectly working and tested code.

Comments

[Amit K Bist]

What url are you calling to test the flow?

[Admin]

Sorry. I map the entire controller to' /register'. Here I corrected the address.

[Saurabh]

When is HttpClientErrorException exception occurring, while calling "/thanks" or "/register/token"? More stacktrace can be useful

[Amit K Bist]

First you need to check if you are calling /register/token/{token} it correctly? If it is actually going inside confirmAccount Method, that you can check by putting a breakpoint of a log statement. If it is not hitting this method then problem is in calling the method which will also throw 404 but it will be thrown by Spring.

[vanillaSugar]

Exactly. RestTemplate throws exceptions and you have to catch them baeldung.com/spring-rest-template-error-handling

[Arun]

This one woked for me